Split column with Json values into multiple columns in Postgres - sql

Question

Calling DBeaver table columns:
Column Name # Data type Encoding
created_at 1 timestamp az64
column_with_json_values 22 varchar(2048) lzo
.
select column_with_json_values from table_name
column_with_json_values
{"messaging": true, "newsletters": true, "ranking_coach": true, "sms_reminders": true, "birthday_reminders": true, "merchant_shiftplan": true}
{"messaging": false, "yext_sync": false, "marketplace": false, "newsletters": false, "ranking_coach": false, "sms_reminders": false, "sms_newsletters": false, "merchant_payment": true, "customer_feedback": true, "birthday_reminders": false, "merchant_dashboard": true, "merchant_shiftplan": false, "reserve_with_google": false, "sms_customer_confirmation": false, "individual_email_from_name": true, "appointment_location_customer": false}
{"messaging": false, "yext_sync": false, "marketplace": false, "newsletters": false, "ranking_coach": false, "sms_reminders": false, "sms_newsletters": false, "merchant_payment": true, "customer_feedback": true, "birthday_reminders": false, "merchant_dashboard": true, "merchant_shiftplan": false, "reserve_with_google": false, "sms_customer_confirmation": false, "individual_email_from_name": true, "appointment_location_customer": false}
{"messaging": false, "newsletters": false, "merchant_payment": false, "birthday_reminders": false, "merchant_shiftplan": false, "double_opt_in_required": false}
{"messaging": false, "yext_sync": false, "marketplace": false, "newsletters": false, "ranking_coach": false, "sms_reminders": false, "sms_newsletters": false, "merchant_payment": true, "customer_feedback": true, "birthday_reminders": false, "merchant_dashboard": true, "merchant_shiftplan": false, "reserve_with_google": false, "sms_customer_confirmation": false, "individual_email_from_name": true, "appointment_location_customer": false}
{"square": false, "insights": true, "api_token": false, "messaging": true, "wait_list": false, "yext_sync": false, "marketplace": false, "newsletters": true, "pdf_prefill": false, "free_product": false, "website_duda": false, "ranking_coach": false, "sms_reminders": true, "contact_widget": false, "online_booking": true, "sms_newsletters": false, "merchant_payment": false, "shared_customers": false, "customer_feedback": true, "external_services": false, "birthday_reminders": true, "merchant_dashboard": true, "merchant_shiftplan": false, "net_promoter_score": false, "new_booking_widget": true, "reserve_with_google": false, "file_download_widget": false, "automated_newsletters": true, "double_opt_in_required": false, "sms_customer_confirmation": false, "individual_email_from_name": false, "new_closingtime_background": false, "gdpr_marketing_opt_in_modal": false, "appointment_location_customer": false, "facebook_instagram_integration": false, "new_full_screen_booking_widget": true, "merchant_logo_on_customer_email": true, "show_all_branch_option_on_insights": false, "participating_account_notifications": false, "show_newsletter_non_subscriber_selection": false}
{"reporting": true, "newsletters": false, "merchant_payment": false, "customer_feedback": true, "reserve_with_google": true, "new_closingtime_background": true, "merchant_logo_on_customer_email": true}
{"messaging": false, "yext_sync": false, "marketplace": false, "newsletters": false, "ranking_coach": false, "sms_reminders": false, "sms_newsletters": false, "merchant_payment": true, "customer_feedback": true, "birthday_reminders": false, "merchant_dashboard": true, "merchant_shiftplan": false, "reserve_with_google": false, "sms_customer_confirmation": false, "individual_email_from_name": true, "appointment_location_customer": false}
{"messaging": false, "newsletters": false, "merchant_payment": false, "birthday_reminders": false, "merchant_shiftplan": false, "double_opt_in_required": false, "new_closingtime_background": true, "facebook_instagram_integration": true, "show_all_branch_option_on_insights": true, "show_newsletter_non_subscriber_selection": false}
{"sms_reminders": true, "customer_feedback": true, "merchant_dashboard": true, "reserve_with_google": false, "show_all_branch_option_on_insights": true}
An interesting point to note is that not all of the rows have the same features. For instance, row#1 to row#5 start with messaging, row #6 start with square, row #7 start with reporting.
I would like to split this one column into multiple columns, where each column has only 1 feature.
Expected Output:
No. messaging newsletter ranking_coach sms_reminders
1 true true true true
2 false null null null
3 false null null null
..
6 null null null null

Answer 1

This is an example query on how to access Json properties, you can cast to JSONB and then access by using ->.
Some info on -> and ->>:
PostgreSQL provides two native operators -> and ->> to help you query JSON data.
The operator -> returns JSON object field as JSON. The operator ->> returns JSON object field as text.
with jsonvalue as (
select '{"messaging": true, "newsletters": true, "ranking_coach": true, "sms_reminders": true, "birthday_reminders": true, "merchant_shiftplan": true}'::jsonb as jsonvalues
)
select
jsonvalues -> 'messaging',
jsonvalues -> 'newsletters'
from jsonvalue;
this will result in your expected output if you adjust my example query on your case. Hope this helped.